Last Christmas Eve, I extolled the virtues of my new Timex watch in my blog. Well, I am reversing that capricious sentiment. In a mere six months, the watch hands fall behind the digital read out. I thought it was cool that my watch had both analog and digital ways to tell time. Alas, the analog hands can’t keep the correct time. Within a span of 24 hours, they’ll fall 24 hours behind. Maybe, I should try a Casio next time.
Engineers at the University of San Diego’s Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a person’s sweat.
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